Bias free optical control of microwave circuits and antennas using improved optically variable capacitors

Monolithic optically variable capacitors (OVC's) consisting of photovoltaic arrays integrated with varactor diodes are used in bias free optical control of microwave circuits and antennas. The improved OVC's presented here required only 450 /spl mu/W of optical power for a 2.2:1 change in...

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Bibliographic Details
Main Authors: Nagra, A.S., Jerphagnon, O., Chavarkar, P., VanBlaricum, M., York, R.A.
Format: Conference Proceeding
Language:English
Subjects:
Capacitors
Integrated optics
Microwave antenna arrays
Microwave antennas
Microwave circuits
Optical arrays
Optical control
Photovoltaic systems
Solar power generation
Varactors
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Description
Summary:Monolithic optically variable capacitors (OVC's) consisting of photovoltaic arrays integrated with varactor diodes are used in bias free optical control of microwave circuits and antennas. The improved OVC's presented here required only 450 /spl mu/W of optical power for a 2.2:1 change in capacitance, a threefold reduction in optical power compared to previous results. Using these improved OVC's, bias free optical control of phase shifters and slot antennas has been demonstrated with the lowest reported optical power.
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.2000.863276